Characteristic

Ammonium hexachloroplatinate, also known as ammonium chloroplatinate, is the inorganic compound with the formula (NH4)2[PtCl6]. It is a rare example of a soluble platinum(IV) salt that is not hygroscopic. It forms intensely yellow solutions in water. 

Chemical formula:(NH₄)₂PtCl₆

Molar mass:443.87 g/mol

Appearance:yellow crystals

Odor:odorless

Density:3.065 g/cm³

Melting point:380 °C (716 °F; 653 K) decomposes

Solubility in water:0.289 g/100ml (0 °C);0.7 g/100ml (15 °C)

0.499 g/100ml (20 °C);3.36 g/100ml (100 °C)

Application

Electroplating of platinum, manufacturing of platinum spongeAmmonium hexachloroplatinate(IV) is used in electroplating of platinum and to make spongy platinum. It reacts with copper(II) acetate and hydrogen sulfide to prepare Cu2PtIIPt3IVS8 which finds application in diamagnetic materials and semiconductors. It is also used in platinum plating. Further, it acts as an analytical reagent.